7a+4=3a-8

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Solution for 7a+4=3a-8 equation: 



7a+4=3a-8

We move all terms to the left:

7a+4-(3a-8)=0

We get rid of parentheses

7a-3a+8+4=0

We add all the numbers together, and all the variables

4a+12=0

We move all terms containing a to the left, all other terms to the right

4a=-12

a=-12/4

a=-3

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